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Tag: Otology

perilymph fishula
Oct 18
2017

What are the clinical features of perilymph fishula? How do you investigate and confirm the diagnosis of perilymph fistula.

Unlike labyrinthine fistula, perilymph may leak from the inner ear to the middle ear either from rupture of the stapediovestibular joint, fracture of the stapes footplate or tearing of the

TOPODIAGNOSTIC TESTS
Oct 18
2017

What test can be performed to localize the site of pathology in acute facial nerve palsy?

The tests performed to localize the site of pathology in acute facial nerve palsy are known as topodiagnostic tests. It refers to the functional testing of an individual facial nerve

Facial Nerve Palsy
Jul 18
2017

Descrbe briefly House-Brackman Grading system of facial nerve paralysis.

The most commonly used clinical grading scale is the House Brackmann (HB) facial nerve grading system which has proposed a six point scale for reporting the result of surgery for

Facial nerve
Jul 18
2017

Write down the difference in the anatomical relationship of facial nerve in adult and children.

At birth, the normal temporal bone has no mastoid process process and an incomplete tympanic ring. The ā€˜Uā€™ shaped tympanic ring has nodular prominence on each arm, which separates the

tympanic membrane
Jul 18
2017

Write down the embryological development of all 3 layer of Tympanic Membrane?

The tympanic membrane is formed by the opposition of two epithelia provided by External Auditory Canal (EAC)Ā  and the middle ear cavity, with the fibrous layer between them. Embroyologically originates

embryology of middle ear
Jul 18
2017

How does middle ear cleft develop embroyologically?

The middle ear cleft consist of The tympanic cavity, The Eustachian tube and The mastoid air cell system. During early embryonic life in the mesenchyme surrounding the pharynx, five or

Blood supply of cochlea
Jul 18
2017

Describe the blood supply of cochlea?

Labyrinthine artery(branch of anterior cerebellar artery) Common cochlear artery Main cochlear artery (80% of cochlea) Vestibule cochlear artery Branch to cochlea (20% of cochlea) Posterior vestibular artery (saccule, Posterior semi

Jul 18
2017

How does the cochlea change a mechanical sound wave into an electrical impulse?

After the mechanical conduction of the sound stimulus from the environment to the external ear and middle ear, the transmitted sound energy from the oval window to the inner ear

malignant otits externa
Jul 18
2017

What is the role of hyperbaric oxygen treatment in Malignant Otitis Externa?

Hyperbaric oxygen treatment is often used in the center with easy access to hyperbaric chambers. Several authors claim benefits but a satisfactory prospective study has yet to be reported. Hyperbaric

malignant otitis externa
Jul 18
2017

What is the better term for malignant otitis externa? Besides pseudomonas, what are the organism causing it? Justify your investigation.

Maligation otitis externa is a misnomer as it is not a neoplastic process. The nomenclature of this condition is confusing as the term skull base osyeomyelitis and necrotizing external otitis

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